trench warfare

definition: a type of armed combat in which the opposing troops fight from trenches that face each other
example: instead of the war ending quickly, it became bogged down in trench warfare
speech part: noun
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definition: a struggle, usually prolonged, between competing entities in which neither side is able to win
example: The two companies had engaged in years of trench warfare, but neither one ever came out on top for very long.
speech part: noun
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How trench warfare is being used?